body {
  margin: 0;
  padding: 0;
}

html,
body,
#app {
  width: 100%;
  height: 100%;
}

/* 文字溢出 */
.single-line {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.multi-line {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
